* new menu item in view menu
* js to toggle view
* store setting in cookie to keep de choice of view persistent
* refactor index and tag page of todos to look more alike
* refactor context and project partials to look more alike
* scaffold.css is only used by login -> rename to login.css
* standard.html.erb is the default application layout -> rename to application.html.erb
* scaffold.html.erb is unused -> deleted